1. The Defendant’s KRW 623,637,00 and the Plaintiff’s annual rate of KRW 6% from February 2, 2015 to August 19, 2016, and the following.

1. Basic facts

A. The status of the parties is a company that operates pipes, air-conditioning facility construction business, energy-saving business, etc., and the defendant is a non-corporate group comprised of occupants in order to manage A apartment in Gangseo-gu Seoul Metropolitan Government (hereinafter “instant apartment”) with 505 households.

B. 1) On May 27, 2009, the Defendant concluded the above consignment management contract, etc. (hereinafter “mining industry”).

A) As to the maintenance, remuneration, safety management, and collection and accumulation, etc. of the long-term repair appropriations for common areas of multi-family housing, common areas of multi-family housing, facilities and welfare facilities owned jointly by occupants of multi-family housing (hereinafter “instant entrustment management contract”).

2) Since that time, C, an employee of the mining industry, has worked as the head of the management office of the apartment of this case.

C. The Defendant’s actual status of the Defendant’s operation was the former president D, after the expiration of the term on December 31, 2010, on behalf of the former president, until July 2012. After that, the election commission was organized to organize the council of occupants’ representatives, but C, the head of the management office, filed a complaint and accusation against the election commission and the former president, and the election commission was dissolved, and D, the former president, returned his/her seal impression, and C was in fact in charge of the management, operation, and expenditure of the instant apartment from July 2012.

1) On May 29, 2014, C entered into a construction contract, etc., the Plaintiff and the instant apartment building project for the Fair Improvement ESCO Services (mechanic and Heating Facility Improvement Works; hereinafter referred to as “instant construction project”).

from May 29, 2014 to the same year.

9. up to 30. The construction cost of KRW 944,350,00 for the total construction cost of KRW 78,399,00 for the installation of equipment on the calculation statement of construction cost of KRW 944,350 for the total construction cost of KRW 78,39,00 for the installation of equipment (he heating board type heat exchange equipment, etc.), KRW 55,514,00 for the installation of machinery room pipes, KRW 122,209,00 for the heating pipe installation of KRW 190,984,00 for the underground pipeline installation of KRW 103,546,80 for the outdoor pipeline installation of KRW 416,739.